Optional dynamic bandwidth allocation based on playback tunnel to support video-on-demand service in virtual private networks

L. Zhang, H. Fu

Research output: Contribution to journalArticlepeer-review

Abstract

This paper focuses on the optional dynamic bandwidth allocation (ODBA) scheme to support video-on-demand (VoD) services in virtual private networks (VPN). Firstly, an approach based on playback tunnel is proposed to determine a feasible range of bandwidth used for dynamic bandwidth allocation to transport video segments with the guarantee that the playback buffer neither underflows nor overflows. Secondly, optional DBA schemes including left-edge DBA, right-edge DBA, middle-tunnel DBA (MT-DBA) and reduced-bandwidth-variability DBA (RBV-DBA) are investigated extensively. The proposed schemes are evaluated by a set of real-life MPEG video traces. The obtained results show that the RBV-DBA scheme outperforms other schemes in terms of reducing peak rate, traffic burstiness and bandwidth variability. On the other hand, the MT-DBA scheme can effectively avoid the playback buffer overflow and underflow.

Original languageEnglish
Pages (from-to)1019-1030
Number of pages12
JournalComputer Communications
Volume24
Issue number11
DOIs
Publication statusPublished - Jun 15 2001
Externally publishedYes

Keywords

  • Internet
  • Multimedia networking
  • Network bandwidth allocation
  • Network multiplexing gain
  • Quality of service
  • Video-on-demand
  • Virtual private networks

ASJC Scopus subject areas

  • Computer Networks and Communications

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